3 years ago

Please i need help with this rn

Mathematics

1 answer:

larisa86 [58]3 years ago

3 0

Hi there!

$\large\boxed{f(9) = 12}$

Evaluating f(x) at x = 9 means we must use the piecewise function where x = 9 is included.

f(x) = 12 includes 9 because a "≤" is inclusive of the interval. Thus:

f(9) = 12

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